brain neurons in tay-sachs disease, 3d

neuron lysosome lamellar membraneous cell hexa betahexosaminidase taysachs disease autosomal recessive disorder genetic gm2 gangliosidosis hexosaminidase deficiency lipid storage lysosomal medical metabolic neurology ocular pathology rare science sphingolipidosis tsd 3d illustration molecule human alpha polypeptide chemical structure molecular enzyme brain congenital demyelination gene mutation ganglioside infancy infant inherited dna